172 A PreUminari/ Note on tlie (fenetics o/Fragaria 



{[>) F. vesca mouophylla. 



Duchesne's father sowed elatior (Hautbois) seed in 1760, and in 

 1761, amongst the plants that came up, sowed vesca seeds. The plants 

 were neglected till 1763, when Duchesne fils went through them and 

 found one plant with single leaves (Fig. 1). This plant he said brrd 

 true whether from seed or stolons. 



Fig. 1. Fig. 2. Fig. 3. 



In 1910 I received .some plants of »no»o^j/<?/iia character from France; 

 some of these in spring and late autunui produce a few bifoliate and 

 trifoliate leaves. In 1912 I selfed one plant, apparently a pure iiiuno- 

 phi/lla, and obtained 15 plants, up to the present, always true, and 

 10 plants giving occasional bifoliate or trifoliate le;wes (Figs. 2 and 3). 



In 1911 I cros.sed vesca, trifoliate, normal (N ) with monophylla 

 abniirnial (^4). 



TABLE II. 



1911 Parents N x A 



I 

 I'.ll'i Fi N 



I 



I 1 



i I 



V.IU F.. 177 N 73 A (Plate VII, tig. 1) 



Before leaving the subject of monophyllas I would call attention to 

 a curious plant (Plate VII, fig. 2). Before I had any monophyllas I selfed 

 a. plant that had "gone wild " on the edge of a gi-ass-covered bank invad- 

 ing a bed of R(jyal Sovereigns ; from this I obtained a large family not 

 unlike a family I obtained at the .same date from a selfed Royal Sovereign. 

 From one plant of this family which I selfed I obtained a small family 

 all more or le.ss abnormal. The plant depicted is probably the most 



